eprintid: 17148
rev_number: 11
eprint_status: archive
userid: 1276
dir: disk0/00/01/71/48
datestamp: 2014-07-22 06:32:43
lastmod: 2014-08-12 09:28:50
status_changed: 2014-07-22 06:32:43
type: doctoralThesis
metadata_visibility: show
creators_name: Skoromnik, Oleg
title: Dynamics of an electron spin
in
strong classical and quantized electromagnetic fields
subjects: ddc-530
divisions: i-130001
adv_faculty: af-13
abstract: The electron motion in the presence of a strong classical and quantized pulse of an electromagnetic
field is studied with a special emphasis on the spin degree of freedom. It is shown
that the Hamiltonian of this system can be separated into two parts with the help of canonical
transformations of the field variables, namely the interaction between an electron and a singlecollective-
mode of the field and fluctuations relatively to this collective-mode. The application
of perturbation theory to the fluctuations allows the conditions of applicability of the singlemode
approximation for the quantized external field to be formulated. Furthermore, within this
approximation the electron spin evolution is investigated. In addition to fast spin oscillations at
the laser frequency, a second time scale is identified due to the intensity-dependent emissions
and absorptions of field quanta, that is collapse and revival dynamics. The effect is observable
at the experimentally feasible intensity of 1018 W=cm2. After this, we switch to the regime of
higher intensities, when the fluctuations of the external field can be neglected. We investigate
the asymmetries in the electron scattering arising due to the electron polarization and pulse
duration, and constrain the optimal conditions for the asymmetry observation.
date: 2014
id_scheme: DOI
id_number: 10.11588/heidok.00017148
ppn_swb: 165879740X
own_urn: urn:nbn:de:bsz:16-heidok-171488
date_accepted: 2014-07-11
advisor: HASH(0x55d997b67058)
language: eng
bibsort: SKOROMNIKODYNAMICSOF2014
full_text_status: public
place_of_pub: Heidelberg
citation:   Skoromnik, Oleg  (2014) Dynamics of an electron spin in strong classical and quantized electromagnetic fields.  [Dissertation]     
document_url: https://archiv.ub.uni-heidelberg.de/volltextserver/17148/1/diss_Skoromnik.pdf